Automatic jointer.



D. A. JOHNSON.

AUTOMATIC JOINTER.

Witnesses Attorneys D. A; JOHNSON.

AUTOMATIC .|0lNTER.

APPLICATION FILED MAYH. 191s.

Patented' Mar. 6, 1917.

3 SHEETS-SHEET 2 Attorneys Witnesses 70' ferm/M D. A. JOHNSON.

AUTOMATIC WINTER. APPLICATION FILED MAY Il |916.

1,218,562. Patented-Mar. 6,1917'.v

3 SHEETS-SH EET 3 n I 'T1 J" I NN 1 'l e m i@ *n- SMQ Q N m 3Q mw w E' O o o ONM@ o o w u m NWA O K N l o m Il N -I HV L x ma D Ii w W WInesses I v 'r i I 0Igntor l by' Y,

wrm/vm v l Attorneys narran i DAVID A. JOHNSON, OF HAMMOND, INDIANA.

AUTOMATIC JOINTER.

Application led May 11, 1916.

To all whom t may concern:

Be it known that I, DAVID A. JOHNSON, a citizen of the United States, residing at Hammond, in the county of Lake and State of Indiana, have invented a new and useful Automatic Jointer, of which the following is a specilication.

The present invention appertains to wood working machines, and aims to provide a novel and improved machine adapted for use as a jointer or for ripping boards, planks, veneer, and the like.

It is the obj ect of the invention to provide a' wood working machine for jointing or ripping boards, planks, veneer, and the like, and provided with improved means for feeding the stock automatically after it is once started, the machine having adjustable feed rollers, and adjustable and ieldable presser rollers for holding the stoor upon the feed rollers.

It 1s also within the scope of the invention to provide a machine having the character. istics noted, which is comparatively simple and inexpensive in construction, and which at the same time, is practical, serviceable and efficient for its intended purposes.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

rlhe invention is illustrated in the accompanying drawings, whereinz- Figure 1 is a plan view of the machine, portions being broken away.

Fig. 2 is a side elevation of the machine, portions being broken away. y

Fig. 3 is an opposite side elevation.

In carrying out the invention, there is provided a suitable frame 1 provided 'at one end with an outstanding horizontal table 2 which. canbe braced by one or more braces 2a attached to the frame 1. A set of feed rollers 3 are carried by the upper portion of the frame in rear of the table 2, and said rollers are disposed transversely and are spaced longitudinally. The shafts 4 of the rollers are j ournaled in bearings 5 at the opposite sides of the frame, and Said bearings have downwardly projecting Specification of Letters Patent.

Patented Mar. 6, 1917. serial No. 96,856. i

slotted brackets or strips 6 resting against the sides of the frame 1 and adjustably clamped thereto by means of bolts 5a, whereby when the bolts V5a are loosened, the brackets 6 and their bearings 5 can be adjusted vertically to bring the feed rollers into different horizontal planes, according to the thickness of the stock being operated upon.

In order to operate the feed rollers simultaneously in the same direction, gears 7 are keyed to certain ends of the shafts 4 at one side of the frame 1 and mesh with idle gears 8 carried by brackets 9 between the brackets 6, said brackets 9 being slotted and being adj ustably clamped to the sides of the frame 1 by means of bolts 10, wherebyv when the bolts 10 are loosened, the brackets 9 the same as the brackets 6 can be adjusted vertically. The rollers 3 are thus operatively connected, and are operated by means of a transverse counter shaft 11 journaled through the sides of the frame adjacent the rear end thereof and approximately in the plane of the shafts 4, said shaft 11 having a gear 12 secured thereon meshing with the rear gear 7. A relatively large pulley wheel 13 is keyedvto one end of the shaft 11 and is connected by an endless belt 14 with a smaller pulley wheel 15 secured upon one end of a drive shaft 16 journaled through the sides of the frame, a pulley wheel 17 being secured upon the opposite end of the shaft 16 to be belted to an engine or other prime mover, either directly or indirectly. Thus, when the shaft 1G is rotated, the shaft 11 is rotated at a slower velocity, in order that the feed rollers 3 will be rotated at the proper speed.

Mounted for rotation above one side of the frame 1 is a cutter head 18 mounted upon a stub shaft 19 j ournaled in a pedestal or bearing 20 attached in any suitable manner to the frame. A small pulley wheel 21 is secured upon the shaft 19 and is connected by an endless belt 22 with a `larger pulley wheel 23 mounted upon the shaft 16 adjacent the pulley wheell, whereby the cutter head 1S is rotated at a high speed. The cutter head 18 is provided with radial slots 24 within which are secured obliquely arranged cutter blades 25 having their sharp edges projecting at an acute. angle from the inner face of the head 18, and having their outer ends curved. An idler roller 2G is carried by the frame below the cutter Vhead between the respective'rollers 23, to support the stock where it passes Ybelow the cutter head.

A presser device is mounted above the feed rollers 3 adjacent the cutter head, to press the stock upon the feed rollers, whereby the stock will be properly advanced. Said device is adjustable vertically upon a pair of standards 27 attached to that side ofthe frame l above which the cutter head 18 is mounted, and said device includes a longitudinal bar V28 provided at its ends with sleeves 29 slidable upon the standards 27. In order to indicatel the vertical position of the presser device, and to enable it to be set at different position, a pointer 30 is attached to one of the collars 29 and cooperates with graduations 3l upon the respective standard 27. VThe presser device includes a second longitudinal bar 32 parallel with the vbar 28 and disposed above the center of the frame, said bar 32 being connected rigidly with the bar 28 by'transverse staysor cross pieces 33, whereby the bars 2S and 32 and stays 33 provide a presser head or frame. lThe bars 28 and 32 are lprovided with vertical guide sleeves 34C through which vertical stems 35 are slidable, wing nuts 35 being threaded upon said stems and seating upon the sleeves 34- to 'support said stems at different positions, according to the adjustments of said nuts. The bar 28 is provided with an inwardly offset portion 28 passing around the cutter head, as seen in Fig. l, and the respective guide sleeves 3e are therefore spaced inwardly with respect to the other guide sleeves of the bar 28. The stems 35 are provided at their lower ends with bearings 37 in which are journaled transverse shafts 38 having presser rollers 39 mounted thereon, said rollers V39 being disposed above and parallel with the feed rollers 3. The rollers 39 are preferably covered with rubber or equivalent material. Coiled wire expansion springs L0 are disposed upon the stems 35 between the bearings 37 and guide sleeves 3a and yieldably depress the presser rollers, although the stems 35 can slide upwardly to permit the presser rollers to yield vertically. The downward movement ofthe presser rollers islimited by the wing nuts 36, which as above indicated, can be adjusted to adjust the positions of the presser rollers. The presser rollers are shorter than the feed rollers 3, and overlie those portions of the feed rollers nearest the cutter head.

provided at its upper end with a sleeve or bearing 4-5 alining with the sleeve-43, and a sleeve nut 416 is mounted for rotation within the bearing 45, and is provided with a bevel gear a? intermeshing with a bevel gear 418 secured to one end of a longitudinal shaft e9 journaled through a bea-ring 50 with which one side of tl e yoke 44 is provided. rl`he shaft 49 is provided at its rear end with a hand wh J.el 5l which can `be rotated manually for rotating the Y nut 46, which in being rotated upon 'the screw 4l will move the yoke '-lil either upwardly `or downwardly, and the bar 2S of the presser head or frame in being attached to the yoke all, will cause the presser head to be moved vertically to the desired position. lt is thus possible to raise or lower the presser rollers as a whole to accommodate different stock.

ln order to regulate the amount of mate-- rial that is cut from the stoclga'longitudinal gage 5a is mounted upon the table 2 in front of the cutter head, and is mounted for transverse adjustment upon suitable slides 55 and 5G.

Another gage 52 is mounted for transverse adjustment upon a slide 53 carried by the forward portion of the frame adjacent the table 2, and is adjustable to various widths kof stock. Y

`ln operation, the board or other stock t be cut, is placed upon the table Vf2, the gage 5a' being properly adjusted to regulate ythe amount of stock that will be cut away by the cutter head, and 'the gage 52 is then adjusted to accommodate the width of the stock, so that the stock will be properly guided to and past the cutter head. The stock is then started rearwardly by hand, and as soon as it passes overthe first feed roller 3, the stock will be fed automatically by the feed rollers, being pressed downwardly thereon by the presser rollers That edge portion of the stock adjacent the cutter head will be cut away, thereby fin ishing said edge, the stock being fed -longiA tudinally by the machine without manual attention after the stock is once started.

Instead of using the cutter head 18, an ordinary circular rip saw can be used, whereby to rip the stock, and cut a strip there-` from, governed by the position of the gage 54e, as will be apparent.

From the foregoing, taken in connection with the drawings, the advantages and attributes of the invention will suggest themselves to those lversed in the art, without further comment being necessary.

Having thus described the invention, what is claimed as new is:

A wood working machine comprising a frame, guiding means carried by the frame, a cutter carried by the frame, an upstanding screw secured rigidly to the frame, a presser frame having asleeve between its ends slidable upon the screw, means for guiding the presser frame for vertical movement, spring depressed rollers carried by the presser frame above said guiding means, an upstanding yoke carried by said sleeve and. having a vertical bearing above the sleeve and a second bearing, a nut rotatable within the irst mentioned bearing and threaded upon said screw, said nut having a bevel gear at its lower end seating upwardly against the first mentioned bearing, a shaft journaled through the vsecond mentioned bearing, and a `bevel gear secured upon said shaft within the yoke and meshing with the aforesaid bevel gear.`

In testimony that I claim the foregoing as my own, I have hereto aiiXed my signature in the presence of two witnesses.

DAVID A. JOHNSON.

Witnesses:

JOSEPH I-I. CoNRoY, WM. W. MCMAHON.

Copies of this patent may be obtained for ive cents each, by addressing the Commissioner of Patents. A. Washington, D. C. 

